Best to send campaign contributions to candidates you support.
Just remember that if those candidates are incumbant Republican Senators or Congressmen, they are assessed "donations" to their respective (Sen or House) Republican Re-election Committees. This means that no matter how much you may like Sen/Rep XYZ, money you donate to him could well end up helping McNut, Linda, etc.
To paraphrase President Trump.....The whole damned thing is rigged!